Die-separating means



Sept; 29, 1925 1,555,732 R. L. WILCOX DIE SEPARATING mmns Filed Oct; 31, 1921 I, i 11 I i 12 10 12 F 2 .1. A

l 5v 140 -\Z6 iii/ g i an illustration of such means beingshown i Patented Sept. 29, 1925.

UNITED STATES.

1,555,732, PATENT OFFICE.

arena-n1), Lnsrnn wrLcoX, or warnnnnny, connno'rron'r, AssIeNQR TO THE WATERBUBY BARREL FOUNDRY AND MACHINE ooMrAN-Y, or warnnnuar, com nnc'rrcn'r, A oonronacrion or C(BNNEGTIGU'E.

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Application flledf October 31, 1921. Serial No. 511,804.

To all whomz't may concern:

Be it 'known that I, RXCHARD LESTER W noox, a citizen of the United States, residing atWaterbury, in the county of New Haven and State of Connecticut, have. invented certain new and useful Improvements in Die- Separating Means, of which the following is a, specification, reference being had therein to the accompanying drawings.

My invention relates to die separating means, its principal object being to prov de simple mechanism for separating the d es of an open die header or upsettlng machine.

Among other aims and objects of my invention may be recited the provisions of a device of the character mentioned with a view to compactness and in which thenumber of parts are few, the construction simple, the cost of production-small, and elhclency of operation high. a

The improvements in the details and arrangement of parts will be apparent from an inspection of the accompanymg drawings, in connection with the description here inaft'er contained, and wherein an embod ment of the invention is disclosed for" the purpose of imparting a full understanding ofthe same. r

Having more particular reference to the drawings and in connection with which like reference characters, refer to corresponding parts in the several figures; i

Figure 1 is a front elevation of a pair of dies; of a heading machine or the like with a portion of the supporting mechanism therefor, and my improved separating means connected therewith;

Figure 2 is a transverse sectional view thereof taken generally upon line 22 of Figure 1; p a

Figure 3 is a transverse sectional view of the separating means, and some of the ad acent parts, taken generallyupon line 33 ofFig ree; and a p p Figure 4 is a fragmentary view of a pair of dies: and adjacent parts similar to Figure l with the separating means, applied to the underside thereof. in v It has heretofore been the practiceto separate the dies of an open die header or up-,

setting, machine at the wire feed line by part ng plns, separating pins, or the like,

' in Letters Patent No. 1,104,090, dated July 21 1914, particularly-in Figure t thereof, and also in Letters Patent No. 1,108,958, dated September 1, 1914, a heavy flat spring, not shown in either of the above patents, bearing upon the upper end of each of the parting pins or separating pins, which move in a path at substantially a right angle to the movement of the dies. With such mechanism the die cap'or other part or parts that support the pins must be machined with great care and exactness and each must be in correct alignment with each otherand the groove formed by the angular corner faces of the dies, when the dies are in proximity to the wire feed line. If the pins are not so arranged, the lower pointed end thereof will not register with said groove, thus having a tendency to cramp the dies and apply an unequal pressure thereto at differentpoints throughout their length. If this occurs, the dies may be separated more at one end than at the other, and if perchance the minimum separation is at'the inner end of the dies a defective feed of the wire results and the end of the wiremay abut against the dies andstop the feed.

lVith the use of such pins the spring pressurenpon the end thereof is constant,

therefore it requires not only a pressure this pressure except when the dies are to be separated at the wire feed line, hence more power is necessarily required to actuate the dies. lVhile more powerful mechanism is required to move the, dies from the wire feed line to the upsetting line, the dies are usually returned by spring pressure, the strength of which must of necessity also be increased to overcome the needless drag and pressure of the pins. 'As'the pins are of substantial length the element in which they are mounted" must of necessity be of substantial height to provide proper support therefor and this height, as'well asthe pin operating springs, requires space that can otherwise be advantageously utilized.

All of the above and other objectionsof the heretofore conventional method for separating the dies are obviated in my improved device, which occupies the minimum amount of not otherwise required space, pressure is applied only when the dies are to be separated, the necessity of fine machining of the parts is entirely eliminated, and in these, and many other ways, produces results that are advantageous and insure certainty and efficiency in operation, and with mechanism that is of comparatively simple design.

Having more particular reference to the drawings, numerals 10 and 11 represent the dies which are of the usual form, with corner angularfaces 12, two of which unite to form a V shaped'groove when the dies are in certain relative position substantially as shown in Figures 1 and 3- wherein the dies are illustrated as being near the wire feed line, this being coincident with the line 22 of Figure 1. A piece of wire designated 13 is shown'in section at this feed line. The die plate upon which the dies are supported is designated 14 and the cap or cover over thetop thereof 15.

All of the mechanisms above described are of a well known form and operate in an equally well known manner and therefore need no further description herein.

'The means for actuating the parts is not shown herein for the above reason but the same travel between the wire feed line and the upsetting line which latter line is designated xa in Figure 1. Fromthe wire feed line to the upsetting line the dies are positively actuated by relatively powerful mechanism to cut 0d a piece of the wire rod, but are usually returned from the upsetting line by yielding mechanism. 40

Referring now particularly to Figures 1, 2 and 3, the cap or cover 15 is provided with an opening 16within which is ournaled the cylindrical portion 17 of a rock member 18 which is provided with a radially projecting tooth 19, the outer end of which is preferably rounded. Upon the inner end ofthe cylindrical portion 17 is a shank 20 that is surrounded by a coil spring 21, the inner end 22 of whichprojects into an opening in the rockmember 18, and the opposite end 23 into an opening in the cap orcover 15. Other means may, of course, be provided for securing the ends of this spring.

Upon one side of the opening 16 is a recess or pocket 24:. Outwardmovement of the rock member 18 is prevented by a cap 25 secured to the cap or cover 15 by screws 26 or similar means.

In Figure l the tooth 19 is shown as projecting into the Vgroove formed by two of the corner faces of the dies 10 and 11 when the same are adjacent to the wire feed line,at which time the dies are separated,

theopening therebetween being uniform n width throughout the length of the dies.

As the die 11 moves toward the upsetting line which is perpendicular to the line 00-00, Figure 1, the rock member 18 moves in a rotary path about the axis of the cylindrical portion 17 until the-diell contacts with the die 10 and thereafter until the rounded end of the tooth 19 is above the top of the dies and in the recess or pocket 24;, its then position being substantially as shown by broken lines in Figure 3. During the re verse movement of the. dies as a unit and when the V groove above mentioned is below the outer end of thetooth 19, the same drops therein and travels thereafter with the dies until the tooth approaches its substantially yertical position, which is near the upsetting me. I

The length of the rock member from the end of the tooth 19 to the top of the cylindrical portion 17 is such that when the said rock member is in its vertical position substantially shown in Figure 3, the outer end of the tooth projects downwardly a sufficient distance to hold the. dies 10 and 11 apart.

This rock member will operate within the opening 16 by gravity but if desired, it may be movedin one direction by a'spring 21, which has only sufficient tension to rotate the rock member, thus applying practically no pressure upon the dies during the move- ,ment thereof.

self to the exact construction herein shown,

and described, but claim all that falls fairly I within the spirit and scope of the appended claims.

Having-described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a member journaled in a part adjacent to the dies and having a tooth connected therewith that projects into th path ofmovement thereof.

2. Means for separating the dies of a heading machine or, the like, comprising in combination with the dies, a member 10111? naled in a part adjacent to the dies and having a tooth connected therewith that projects .into the path of movement thereof; and means connected therewith for actuating the same in one direction.

3. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a member journaled in a part adjacent to the dies and having a tooth connected therewith that projects into the path of movement thereof; and a spring for rotating said member in one direction.

4. Means for separating th dies of a heading machine or the like, comprising in combination with the dies, a member having a cylindrical portion mounted so as to move upon its axis in a part adjacent to said dies and having a tooth projecting radially therefrom into the path of movement of said dies; and means for preventing outward endwise movement thereof.

5. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a rock member, rotatably mounted in a part adjacent to the dies, and yielding means for moving said rock member in one direction.

6. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a rock member rotatably mounted in a part adjacent to the dies, and a spring encircling said rock member, having connection therewith and an adjacent part, for rotation of the rock member in one direction.

7. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a member journaled in a part adjacent to the dies and having a tooth connected therewith that projects into the path of movement thereof; the dies during their movement rocking said member and projecting the tooth thereof into a recess in said part.

8. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a member having a cylindrical portion mounted so as to move upon its axis in a part adjacent to said dies and having a tooth projecting radially therefrom into the path of movement of said dies; and a cap or cover for preventing outward endwise movement thereof.

9. Means for separating the dies of a heading machine or the like, comprising in combination with the dies, a member having a cylindrical portion mounted so as to move upon its axis in a part adjacent to said dies and having a tooth with a rounded end projecting radially therefrom into the path of movement of said dies; and means for preventing outward endwise movement thereof.

10. In combination with the dies of a heading machine or the like; of means for separating the dies wherein each of said dies has a face thereon that co-operates with a similar face upon another die to form a groove when the dies are in operative relation with each other, of a member rotatably mounted adjacent to the Wire feed line and having a part thereon that projects into said groove, the dies during their travel from the wire feed line to the upsetting line and vice versa rocking the member upon its pivot mounting without imparting a relative movement to the dies but when adjacent to the wire feed line the projecting part is forced between the dies and separates the same.

In testimony whereof, I have hereunto affixed my signature.

RICHARD LESTER WILCOX. 

